Fuel Solenoid Replacement

  1. Disconnect the fuel solenoid wire connector from the main/unified wire harness and remove the old fuel solenoid.

  2. Connect the new fuel solenoid wire connector to the main/unified wire harness.

  3. Press the ON Key to turn the unit on.

  4. Use the microprocessor keypad to enter the Output Test Mode. Refer to the appropriate Microprocessor Diagnostic Manual for specific information about the Output Test Mode.

  5. Perform a visual functionality check per step 8 in “Testing the Fuel Solenoid” above to verify the fuel solenoid operates correctly.

  6. Energize the fuel solenoid by energizing the run relay with the Output Test Mode.

    Note The fuel solenoid must be energized when it is installed. If not, the plunger and the linkage may not line up correctly and the fuel solenoid will not function properly.

  7. Place the O-ring in the groove in the end of the fuel injection pump. Make sure that the O-ring is positioned correctly during installation to avoid damage and leaks.

    Fuel Solenoid Components

    1. Fuel Solenoid
    2. O-ring
    3. Groove in Fuel Injection Pump

  8. Install the new fuel solenoid.

  9. Press the OFF Key to turn the unit off after installing the fuel solenoid.

Parent topic: Engine Fuel System